Using the same namespace for multiple independant projects

Usage
1

Hi,
Is there a way to use the same namespace accross multiple packages, like:

find_package(prog_extA)
find_package(prog_extB)
target_link_librairies(target PUBLIC prog::extA prog::extB)

Or even, register multiple packages in the same “meta”-package, like:

find_package(prog)
target_link_librairies(target PUBLIC prog::extA prog::extB)

But without the use of the component mechanism, which would require that all extensions are handled in the same CMake project. My goal is to be able to build sub-packages in fully independant CMake projects. And from my understanding, it is not possible with the component mechanism(?)

Thanks.

2

There’s no rule about namespaces having to match the package name in general, so prog_extA and prog_extB can both use NAMESPACE prog:: just fine.

3

And Qt does the second part as well (using COMPONENTS to look for the “extensions”).

4

AFAIU configuration file creation, when I’m creating extA in a namespace prog, I will in fact create some progConfig.cmake, progTargets.cmake and progTargets-<build type>.cmake files. Thus when I will create extB I will overwrite these files and only prog::extB will be visible?